Famous Chinese Yue Diao scale. This drum is tuned with A4 set to 432 Hz rather than the normal 440 Hz, which makes each note about 30% deeper. The notes are A#3, C4, D, F, G, A#, C5, D. I find this scale very soothing and the deeper scale is more resonant than the scales in C, which is made slightly more resonant with the 432 Hz tuning. This drum is ready to ship. I normally ship within one business day.